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US 4,129,149 AGranted
Control valve means
AssigneesAktiebolaget Fellingsbro Verkstader, Erik Sorberg Armaturfabrik Aktiebolag
InventorsRoland Brehmer, Bengt Sorberg
Life of this patent
Estimating the term…
Abstract
A control valve for a central heating system, the valve having an inlet, an outlet, a branch outlet, and a bypass conduit between the inlet and the outlet, the cross sectional flow area of the bypass conduit being independent of the position of either a main control valve member for controlling flow through the branch outlet or a settable valve member for limiting flow through the branch outlet.
Claims8
A central heating radiator control valve comprising (a) a valve housing having:
- (i) an inlet, a main outlet and a branch outlet arranged for flow of heating fluid from the inlet to the branch outlet and return flow through the branch outlet to the main outlet;
- (ii) a fixed planar longitudinal partition dividing the branch outlet into side-by-side relatively isolated flow and return passages;
- (iii) a first valve passageway axially transverse to the branch outlet and communicating the inlet to the flow passage, the first valve passageway and flow passage defining a first valve port therebetween;
- (iv) a second valve passageway axially transverse to the branch outlet and communicating the return passage to the main outlet, the return passage and second valve passageway defining a port therebetween;
- (v) a first valve seating in the first valve passageway around the first valve port;
- (vi) a second valve seating in the second valve passageway around the second valve port;
- and
- (vii) (a) a bypass conduit with its axis parallel to the axes of the first and second valve passageways for bypass flow direct from the inlet to the main outlet;
- (b) a main control valve member mounted in the first valve passageway for linear movement axially of the passageway towards and away from the first valve seating to vary the flow through the branch outlet in the normal operation of the valve;
- and (c) a second, settable, valve member mounted in the second valve passageway for linear movement axially of the passageway and independent of the main control valve member to limit the flow through the branch outlet;
- the cross-sectional flow area of the bypass conduit being independent of the positions of the main and second valve members in the normal operation of the valve, the bypass conduit remaining open in all operative positions of the main control valve member, and the valve ports being closable by the respective valve members to isolate the branch outlet.
8 more elements
A central heating radiator control valve comprising (a) a valve housing having:
- (i) an inlet, a main outlet and a branch outlet arranged for flow of heating fluid from the inlet to the branch outlet and return flow through the branch outlet to the main outlet;
- (ii) a fixed planar longitudinal partition dividing the branch outlet into side-by-side relatively isolated flow and return passages;
- (iii) a first valve passageway axially transverse to the branch outlet and communicating the inlet to the flow passage, the first valve passageway and flow passage defining a first valve port therebetween;
- (iv) a second valve passageway axially transverse to the branch outlet and communicating the return passage to the main outlet, the return passage and second valve passageway defining a port therebetween;
- (v) a first valve seating in the first valve passageway around the first valve port;
- (vi) a second valve seating in the second valve passageway around the second valve port;
- and
- (vii) (a) a bypass conduit with its axis parallel to the axes of the first and second valve passageways, leading directly from the inlet to the main outlet and presenting an access opening;
- (b) a main control valve member mounted in the first valve passageway for linear movement axially of the passageway towards and away from the first valve seating to vary the flow through the branch outlet in the normal operation of the valve;
- (c) a second, settable, valve member mounted in the second valve passageway for linear movement axially of the passageway and independent of the main control valve member to limit the flow through the branch outlet;
- the cross-sectional flow area of the bypass conduit being independent of the positions of the main and second valve members and the valve ports being closable by the respective valve members to isolate the branch outlet;
- and (d) removable plug means completely blocking the bypass conduit, thereby adapting the valve for use in a double line central heating system;
- and the plug means being replaceable by plug means for closing the access opening while leaving the bypass conduit open for flow therethrough, thereby adapting the valve for use in a single line central heating system.
10 more elements
Dependencies are inferred from the claim text.